Organization and Principal Activities	9 Months Ended
Sep. 30, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization and Principal Activities	NOTE 1 — ORGANIZATION AND PRINCIPAL ACTIVITIES Ritter Pharmaceuticals, Inc. (“Ritter” or the “Company”) is a Delaware corporation headquartered in Los Angeles, California. The Company was formed as a Nevada limited liability company on March 29, 2004 under the name Ritter Natural Sciences, LLC, and converted into a Delaware corporation on September 16, 2008. Ritter Pharmaceuticals, Inc. develops novel therapeutic products that modulate the human gut microbiome to treat gastrointestinal diseases. The Company is advancing human gut health research by exploring the metabolic capacity of the gut microbiota, and translating the functionality of these microbiome modulators into safe and effective applications. The Company’s lead drug candidate, RP-G28, has the potential to become the first Food and Drug Administration (“FDA”) approved drug for lactose intolerance, a condition that affects more than one billion people worldwide. The Company currently operates in one business segment focusing on the development and commercialization of RP-G28. The Company is not organized by market and is managed and operated as one business. A single management team reports to the chief operating decision maker, the Chief Executive Officer. *Initial Public Offering* On June 24, 2015, the Company’s registration statement on Form S-1 (File No. 333-202924) relating to its initial public offering of its common stock was declared effective by the Securities and Exchange Commission (“SEC”). The shares began trading on the NASDAQ Capital Market on June 24, 2015. The initial public offering closed on June 29, 2015, and 4,000,000 shares of common stock were sold at an initial public offering price of $5.00 per share. The Company paid to the underwriters underwriting discounts and commissions of approximately $1.6 million in connection with the offering. In addition, the Company incurred expenses of approximately $1 million in connection with the offering. Thus, the net offering proceeds to the Company, after deducting underwriting discounts and commissions and offering expenses, were approximately $17.4 million. *Capitalization* In connection with the Company’s initial public offering in June 2015, the Company effected a 1–for–7.15 reverse split of its common stock. All references to shares of common stock outstanding, average number of shares outstanding and per share amounts in these financial statements and notes to financial statements have been adjusted to reflect the reverse split on a retroactive basis.

Organization and Principal Activities

9 Months Ended

Sep. 30, 2016

Organization, Consolidation and Presentation of Financial Statements [Abstract]

NOTE 1 — ORGANIZATION AND PRINCIPAL ACTIVITIES

Ritter Pharmaceuticals, Inc. (“Ritter” or the “Company”) is a Delaware corporation headquartered in Los Angeles, California. The Company was formed as a Nevada limited liability company on March 29, 2004 under the name Ritter Natural Sciences, LLC, and converted into a Delaware corporation on September 16, 2008.

Ritter Pharmaceuticals, Inc. develops novel therapeutic products that modulate the human gut microbiome to treat gastrointestinal diseases. The Company is advancing human gut health research by exploring the metabolic capacity of the gut microbiota, and translating the functionality of these microbiome modulators into safe and effective applications. The Company’s lead drug candidate, RP-G28, has the potential to become the first Food and Drug Administration (“FDA”) approved drug for lactose intolerance, a condition that affects more than one billion people worldwide.

The Company currently operates in one business segment focusing on the development and commercialization of RP-G28. The Company is not organized by market and is managed and operated as one business. A single management team reports to the chief operating decision maker, the Chief Executive Officer.

Initial Public Offering

On June 24, 2015, the Company’s registration statement on Form S-1 (File No. 333-202924) relating to its initial public offering of its common stock was declared effective by the Securities and Exchange Commission (“SEC”). The shares began trading on the NASDAQ Capital Market on June 24, 2015. The initial public offering closed on June 29, 2015, and 4,000,000 shares of common stock were sold at an initial public offering price of $5.00 per share.

The Company paid to the underwriters underwriting discounts and commissions of approximately $1.6 million in connection with the offering. In addition, the Company incurred expenses of approximately $1 million in connection with the offering. Thus, the net offering proceeds to the Company, after deducting underwriting discounts and commissions and offering expenses, were approximately $17.4 million.

Capitalization

In connection with the Company’s initial public offering in June 2015, the Company effected a 1–for–7.15 reverse split of its common stock. All references to shares of common stock outstanding, average number of shares outstanding and per share amounts in these financial statements and notes to financial statements have been adjusted to reflect the reverse split on a retroactive basis.